Sample interview questions: How familiar are you with the concept of quantum imaging using entangled photons in a Mach-Zehnder interferometer?
Sample answer:
Quantum Imaging Using Entangled Photons in a Mach-Zehnder Interferometer
As a Physics > Optics Physicist, I am highly familiar with the concept of quantum imaging using entangled photons in a Mach-Zehnder interferometer. This cutting-edge technique utilizes entangled photon pairs to achieve enhanced sensitivity and resolution in imaging applications.
Principle:
In this setup, entangled photon pairs are generated using a nonlinear optical process, such as spontaneous parametric down-conversion (SPDC). These pairs consist of two photons with correlated polarizations or wavelengths.
The entangled photons are then guided through a Mach-Zehnder interferometer, a device with two paths that interfere with each other. By precisely controlling the phase difference between the paths, it is possible to selectively measure the quantum state of the entangled photons.
Advantages:
Quantum imaging with entangled photons offers several unique advantages over conventional imaging techniques:
- Enhanced Sensitivity: Entangled photons can be used to detect faint signals with high precision, even in low-light conditions. This enhanced sensitivity arises from the correlation between the photons, which allows for noise reduction.
- Sub-Wavelength Resolution: By exploiting quantum entanglement, it is possible to achieve sub-wave… Read full answer